^[code] sets foreground
&-[code] sets background
&=[fg][bg] sets both
^n goes back to normal
&_ toggle underline &/ toggle italic &| toggle strikethrough
codes are
l XXX L XXX g XXX G XXX
b XXX B XXX c XXX C XXX
r XXX R XXX y XXX Y XXX
m XXX M XXX w XXX W XXX
Some users can see more colours - for example ^530Y may come up as orange, and ^554W as a pink. See info 256 for more details.
See info standard for all the special codes.